The Signature Series Steel Bleacher Understructures offer unbeatable value and performance. Engineered, manufactured and assembled in the USA, the Signature steel supports are built to last. This particular understructure is made for 4 rows of bleachers. Granite steel supports are made from A500 steel. This steel is known for it’s strength characteristics.

The black powdercoat finish offers unmatched finish and expected life. These steel frames offer plenty of versatility as you can add your own seatboard or footboard. Also included are galvanized steel X-braces. These braces are built for ease of use and rigidity.

There are 3 different 4 row options:

• 4 Row, 6′ Long (90309) – This option includes two (2) steel frames and two (2) X-braces. These frames are designed to be placed 6′ apart. The recommended seatboard length is 9′ for this option. Seats 24 people when properly equipped. Package weighs 94 lbs.
• 4 Row, 12′ Long (90310) – This option includes three (3) steel frames and four (4) X-braces. These frames are designed to be placed 6′ apart. The recommended seatboard length is 15′ for this option. Seats 40 people when properly equipped. Package weighs 118 lbs.
• 4 Row, 18′ Long (90311) – This option includes four (4) steel frames and six (6) X-braces. These frames are designed to be placed 6′ apart. The recommended seatboard length is 21′ for this option. Seats 56 people when properly equipped. Package weights 206 lbs.

All-In-One Starter Package Includes

• Black Powder Coated Steel Frames (Ranging from 2-4 based on package ordered)
• Galvanized Steel X-braces (Ranging from 2-6 based on package ordered)
• Hardware Kit
• Backed by an industry leading five year warranty.

Granite Industries Online
The Granite Online Store is the official online store for all Granite Industries products, American Cart products and Overland Cart products.